Carrier GT-PX Split Series Installation, Operation & Maintenance Instructions Manual

37R e s i d e n t i a l S p l i t - 6 0 H z R 2 2 & R 4 1 0 AR e v. : 5 J u n e , 2 0 0 8C a r r i e r : Tu r n t o t h e E x p e r t sUnit Starting and Operating ConditionsOperating LimitsEnvironment – “Indoor” compressor section is designed forindoor installation only. Never install “indoor” compressorsection in areas subject to freezing or where humidity levelscould cause cabinet condensation (such as unconditionedspaces subject to 100% outside air). “Outdoor” unit isdesigned for conditions where ambient air is below freezing(see Table 11).Power Supply – A voltage variation of +/– 10% of nameplateutilization voltage is acceptable.Starting ConditionsConsult Table 11 for the particular model. Starting conditionsvary depending upon model and are based upon thefollowing notes:Notes:1. Conditions in Table 11 are not normal or continuousoperating conditions. Minimum/maximum limits arestart-up conditions to bring the building space up tooccupancy temperatures. Units are not designed tooperate under these conditions on a regular basis.2. Voltage utilization range complies with ARIStandard 110.Determination of operating limits is dependent primarily uponthree factors: 1) return air temperature. 2) water temperature,and 3) ambient temperature. When any one of these factorsis at minimum or maximum levels, the other two factorsshould be at normal levels to insure proper unit operation.Extreme variations in temperature and humidity and/orcorrosive water or air will adversely affect unit performance,reliability, and service life.Table 11: Unit OperationOperating Limits GT-PX/GT-GS GT-SCooling Heating Cooling HeatingAir LimitsMin. ambient air, DB 45°F [7°C] 39°F [4°C] -10°F [-23°C] -10°F [-23°C]Rated ambient air, DB 80.6°F [27°C] 68°F [20°C] 80.6°F [27°C] 68°F [20°C]Max. ambient air, DB 110°F [43°C] 85°F [29°C] 110°F [43°C] 85°F [29°C]Min. entering air, DB/WB 50°F [10°C] 40°F [4.5°C] 50°F [10°C] 50°F [10°C]Rated entering air, DB/WB 80.6/66.2°F [27/19°C] 68°F [20°C] 80.6/66.2°F [27/19°C] 68°F [20°C]Max. entering air, DB/WB 110/83°F [43/28°C] 80°F [27°C] 110/83°F [43/28°C] 80°F [27°C]Water LimitsMin. entering water 30°F [-1°C] 20°F [-6.7°C] 30°F [-1°C] 20°F [-6.7°C]Normal entering water 50-110°F [10-43°C] 30-70°F [-1 to 21°C] 50-110°F [10-43°C] 30-70°F [-1 to 21°C]Max. entering water 120°F [49°C] 90°F [32°C] 120°F [49°C] 90°F [32°C]Normal water flow 1.5 to 3.0 gpm/ton 1.5 to 3.0 gpm/ton2.0 to 3.9 l/m per kW 2.0 to 3.9 l/m per kW